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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2014 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: JSimpleDBTransactionManager.html 842 2015-03-07 18:20:42Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.jsimpledb.spring;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import java.util.List;<a name="line.10"></a>
<span class="sourceLineNo">011</span><a name="line.11"></a>
<span class="sourceLineNo">012</span>import org.jsimpledb.JSimpleDB;<a name="line.12"></a>
<span class="sourceLineNo">013</span>import org.jsimpledb.JTransaction;<a name="line.13"></a>
<span class="sourceLineNo">014</span>import org.jsimpledb.ValidationMode;<a name="line.14"></a>
<span class="sourceLineNo">015</span>import org.jsimpledb.core.DatabaseException;<a name="line.15"></a>
<span class="sourceLineNo">016</span>import org.jsimpledb.core.Transaction;<a name="line.16"></a>
<span class="sourceLineNo">017</span>import org.jsimpledb.kv.RetryTransactionException;<a name="line.17"></a>
<span class="sourceLineNo">018</span>import org.jsimpledb.kv.StaleTransactionException;<a name="line.18"></a>
<span class="sourceLineNo">019</span>import org.springframework.beans.factory.InitializingBean;<a name="line.19"></a>
<span class="sourceLineNo">020</span>import org.springframework.dao.PessimisticLockingFailureException;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import org.springframework.transaction.CannotCreateTransactionException;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import org.springframework.transaction.NoTransactionException;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import org.springframework.transaction.TransactionDefinition;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import org.springframework.transaction.TransactionSystemException;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import org.springframework.transaction.TransactionTimedOutException;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import org.springframework.transaction.TransactionUsageException;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import org.springframework.transaction.support.AbstractPlatformTransactionManager;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import org.springframework.transaction.support.DefaultTransactionStatus;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import org.springframework.transaction.support.ResourceTransactionManager;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import org.springframework.transaction.support.SmartTransactionObject;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import org.springframework.transaction.support.TransactionSynchronization;<a name="line.31"></a>
<span class="sourceLineNo">032</span><a name="line.32"></a>
<span class="sourceLineNo">033</span>/**<a name="line.33"></a>
<span class="sourceLineNo">034</span> * JSimpleDB implementation of Spring's<a name="line.34"></a>
<span class="sourceLineNo">035</span> * {@link org.springframework.transaction.PlatformTransactionManager PlatformTransactionManager} interface,<a name="line.35"></a>
<span class="sourceLineNo">036</span> * allowing methods annotated with Spring's {@link org.springframework.transaction.annotation.Transactional &amp;#64;Transactional}<a name="line.36"></a>
<span class="sourceLineNo">037</span> * annotation to perform transactions on a {@link JSimpleDB} database.<a name="line.37"></a>
<span class="sourceLineNo">038</span> *<a name="line.38"></a>
<span class="sourceLineNo">039</span> * &lt;p&gt;<a name="line.39"></a>
<span class="sourceLineNo">040</span> * Properly integrates with {@link JTransaction#getCurrent JTransaction.getCurrent()} to participate in<a name="line.40"></a>
<span class="sourceLineNo">041</span> * existing transactions when appropriate.<a name="line.41"></a>
<span class="sourceLineNo">042</span> * &lt;/p&gt;<a name="line.42"></a>
<span class="sourceLineNo">043</span> *<a name="line.43"></a>
<span class="sourceLineNo">044</span> * @see org.jsimpledb.spring<a name="line.44"></a>
<span class="sourceLineNo">045</span> */<a name="line.45"></a>
<span class="sourceLineNo">046</span>@SuppressWarnings("serial")<a name="line.46"></a>
<span class="sourceLineNo">047</span>public class JSimpleDBTransactionManager extends AbstractPlatformTransactionManager<a name="line.47"></a>
<span class="sourceLineNo">048</span>  implements ResourceTransactionManager, InitializingBean {<a name="line.48"></a>
<span class="sourceLineNo">049</span><a name="line.49"></a>
<span class="sourceLineNo">050</span>    /**<a name="line.50"></a>
<span class="sourceLineNo">051</span>     * The default {@link ValidationMode} to use for transactions ({@link ValidationMode#AUTOMATIC}).<a name="line.51"></a>
<span class="sourceLineNo">052</span>     */<a name="line.52"></a>
<span class="sourceLineNo">053</span>    public static final ValidationMode DEFAULT_VALIDATION_MODE = ValidationMode.AUTOMATIC;<a name="line.53"></a>
<span class="sourceLineNo">054</span><a name="line.54"></a>
<span class="sourceLineNo">055</span>    /**<a name="line.55"></a>
<span class="sourceLineNo">056</span>     * The configured {@link JSimpleDB} from which transactions are created.<a name="line.56"></a>
<span class="sourceLineNo">057</span>     */<a name="line.57"></a>
<span class="sourceLineNo">058</span>    protected transient JSimpleDB jdb;<a name="line.58"></a>
<span class="sourceLineNo">059</span><a name="line.59"></a>
<span class="sourceLineNo">060</span>    /**<a name="line.60"></a>
<span class="sourceLineNo">061</span>     * Whether a new schema version is allowed. Default true.<a name="line.61"></a>
<span class="sourceLineNo">062</span>     */<a name="line.62"></a>
<span class="sourceLineNo">063</span>    protected boolean allowNewSchema = true;<a name="line.63"></a>
<span class="sourceLineNo">064</span><a name="line.64"></a>
<span class="sourceLineNo">065</span>    /**<a name="line.65"></a>
<span class="sourceLineNo">066</span>     * The {@link ValidationMode} to use for transactions.<a name="line.66"></a>
<span class="sourceLineNo">067</span>     */<a name="line.67"></a>
<span class="sourceLineNo">068</span>    protected ValidationMode validationMode = DEFAULT_VALIDATION_MODE;<a name="line.68"></a>
<span class="sourceLineNo">069</span><a name="line.69"></a>
<span class="sourceLineNo">070</span>    private boolean validateBeforeCommit = true;<a name="line.70"></a>
<span class="sourceLineNo">071</span><a name="line.71"></a>
<span class="sourceLineNo">072</span>    public void afterPropertiesSet() throws Exception {<a name="line.72"></a>
<span class="sourceLineNo">073</span>        if (this.jdb == null)<a name="line.73"></a>
<span class="sourceLineNo">074</span>            throw new Exception("no JSimpleDB configured");<a name="line.74"></a>
<span class="sourceLineNo">075</span>    }<a name="line.75"></a>
<span class="sourceLineNo">076</span><a name="line.76"></a>
<span class="sourceLineNo">077</span>    /**<a name="line.77"></a>
<span class="sourceLineNo">078</span>     * Configure the {@link JSimpleDB} that this instance will operate on.<a name="line.78"></a>
<span class="sourceLineNo">079</span>     *<a name="line.79"></a>
<span class="sourceLineNo">080</span>     * &lt;p&gt;<a name="line.80"></a>
<span class="sourceLineNo">081</span>     * Required property.<a name="line.81"></a>
<span class="sourceLineNo">082</span>     * &lt;/p&gt;<a name="line.82"></a>
<span class="sourceLineNo">083</span>     *<a name="line.83"></a>
<span class="sourceLineNo">084</span>     * @param jdb associated database<a name="line.84"></a>
<span class="sourceLineNo">085</span>     */<a name="line.85"></a>
<span class="sourceLineNo">086</span>    public void setJSimpleDB(JSimpleDB jdb) {<a name="line.86"></a>
<span class="sourceLineNo">087</span>        this.jdb = jdb;<a name="line.87"></a>
<span class="sourceLineNo">088</span>    }<a name="line.88"></a>
<span class="sourceLineNo">089</span><a name="line.89"></a>
<span class="sourceLineNo">090</span>    /**<a name="line.90"></a>
<span class="sourceLineNo">091</span>     * Configure whether a new schema version may be created.<a name="line.91"></a>
<span class="sourceLineNo">092</span>     *<a name="line.92"></a>
<span class="sourceLineNo">093</span>     * &lt;p&gt;<a name="line.93"></a>
<span class="sourceLineNo">094</span>     * Default value is false.<a name="line.94"></a>
<span class="sourceLineNo">095</span>     * &lt;/p&gt;<a name="line.95"></a>
<span class="sourceLineNo">096</span>     *<a name="line.96"></a>
<span class="sourceLineNo">097</span>     * @param allowNewSchema whether to allow recording new schema versions<a name="line.97"></a>
<span class="sourceLineNo">098</span>     */<a name="line.98"></a>
<span class="sourceLineNo">099</span>    public void setAllowNewSchema(boolean allowNewSchema) {<a name="line.99"></a>
<span class="sourceLineNo">100</span>        this.allowNewSchema = allowNewSchema;<a name="line.100"></a>
<span class="sourceLineNo">101</span>    }<a name="line.101"></a>
<span class="sourceLineNo">102</span><a name="line.102"></a>
<span class="sourceLineNo">103</span>    /**<a name="line.103"></a>
<span class="sourceLineNo">104</span>     * Configure the {@link ValidationMode} to use for transactions.<a name="line.104"></a>
<span class="sourceLineNo">105</span>     *<a name="line.105"></a>
<span class="sourceLineNo">106</span>     * &lt;p&gt;<a name="line.106"></a>
<span class="sourceLineNo">107</span>     * Default value is {@link ValidationMode#AUTOMATIC}.<a name="line.107"></a>
<span class="sourceLineNo">108</span>     * &lt;/p&gt;<a name="line.108"></a>
<span class="sourceLineNo">109</span>     *<a name="line.109"></a>
<span class="sourceLineNo">110</span>     * @param validationMode validation mode for transactions<a name="line.110"></a>
<span class="sourceLineNo">111</span>     */<a name="line.111"></a>
<span class="sourceLineNo">112</span>    public void setValidationMode(ValidationMode validationMode) {<a name="line.112"></a>
<span class="sourceLineNo">113</span>        this.validationMode = validationMode != null ? validationMode : DEFAULT_VALIDATION_MODE;<a name="line.113"></a>
<span class="sourceLineNo">114</span>    }<a name="line.114"></a>
<span class="sourceLineNo">115</span><a name="line.115"></a>
<span class="sourceLineNo">116</span>    /**<a name="line.116"></a>
<span class="sourceLineNo">117</span>     * Configure whether to invoke {@link JTransaction#validate} just prior to commit (and prior to any<a name="line.117"></a>
<span class="sourceLineNo">118</span>     * synchronization callbacks). This also causes validation to be performed at the end of each inner<a name="line.118"></a>
<span class="sourceLineNo">119</span>     * transaction that is participating in an outer transaction.<a name="line.119"></a>
<span class="sourceLineNo">120</span>     * If set to false, validation still occurs, but only when the outermost transaction commits.<a name="line.120"></a>
<span class="sourceLineNo">121</span>     *<a name="line.121"></a>
<span class="sourceLineNo">122</span>     * &lt;p&gt;<a name="line.122"></a>
<span class="sourceLineNo">123</span>     * Default true.<a name="line.123"></a>
<span class="sourceLineNo">124</span>     * &lt;/p&gt;<a name="line.124"></a>
<span class="sourceLineNo">125</span>     *<a name="line.125"></a>
<span class="sourceLineNo">126</span>     * @param validateBeforeCommit whether to validate after inner transactions<a name="line.126"></a>
<span class="sourceLineNo">127</span>     */<a name="line.127"></a>
<span class="sourceLineNo">128</span>    public void setValidateBeforeCommit(boolean validateBeforeCommit) {<a name="line.128"></a>
<span class="sourceLineNo">129</span>        this.validateBeforeCommit = validateBeforeCommit;<a name="line.129"></a>
<span class="sourceLineNo">130</span>    }<a name="line.130"></a>
<span class="sourceLineNo">131</span><a name="line.131"></a>
<span class="sourceLineNo">132</span>    @Override<a name="line.132"></a>
<span class="sourceLineNo">133</span>    public Object getResourceFactory() {<a name="line.133"></a>
<span class="sourceLineNo">134</span>        return this.jdb;<a name="line.134"></a>
<span class="sourceLineNo">135</span>    }<a name="line.135"></a>
<span class="sourceLineNo">136</span><a name="line.136"></a>
<span class="sourceLineNo">137</span>    @Override<a name="line.137"></a>
<span class="sourceLineNo">138</span>    protected Object doGetTransaction() {<a name="line.138"></a>
<span class="sourceLineNo">139</span>        return new TxWrapper(this.getCurrent());<a name="line.139"></a>
<span class="sourceLineNo">140</span>    }<a name="line.140"></a>
<span class="sourceLineNo">141</span><a name="line.141"></a>
<span class="sourceLineNo">142</span>    @Override<a name="line.142"></a>
<span class="sourceLineNo">143</span>    protected boolean isExistingTransaction(Object txObj) {<a name="line.143"></a>
<span class="sourceLineNo">144</span>        return ((TxWrapper)txObj).getJTransaction() != null;<a name="line.144"></a>
<span class="sourceLineNo">145</span>    }<a name="line.145"></a>
<span class="sourceLineNo">146</span><a name="line.146"></a>
<span class="sourceLineNo">147</span>    @Override<a name="line.147"></a>
<span class="sourceLineNo">148</span>    protected void doBegin(Object txObj, TransactionDefinition txDef) {<a name="line.148"></a>
<span class="sourceLineNo">149</span><a name="line.149"></a>
<span class="sourceLineNo">150</span>        // Sanity check<a name="line.150"></a>
<span class="sourceLineNo">151</span>        final TxWrapper tx = (TxWrapper)txObj;<a name="line.151"></a>
<span class="sourceLineNo">152</span>        if (tx.getJTransaction() != null)<a name="line.152"></a>
<span class="sourceLineNo">153</span>            throw new TransactionUsageException("there is already a transaction associated with the current thread");<a name="line.153"></a>
<span class="sourceLineNo">154</span><a name="line.154"></a>
<span class="sourceLineNo">155</span>        // Create JSimpleDB transaction<a name="line.155"></a>
<span class="sourceLineNo">156</span>        final JTransaction jtx;<a name="line.156"></a>
<span class="sourceLineNo">157</span>        try {<a name="line.157"></a>
<span class="sourceLineNo">158</span>            jtx = this.jdb.createTransaction(this.allowNewSchema, this.validationMode);<a name="line.158"></a>
<span class="sourceLineNo">159</span>        } catch (DatabaseException e) {<a name="line.159"></a>
<span class="sourceLineNo">160</span>            throw new CannotCreateTransactionException("error creating new JSimpleDB transaction", e);<a name="line.160"></a>
<span class="sourceLineNo">161</span>        }<a name="line.161"></a>
<span class="sourceLineNo">162</span><a name="line.162"></a>
<span class="sourceLineNo">163</span>        // Configure JSimpleDB transaction and bind to current thread; but if we fail, roll it back<a name="line.163"></a>
<span class="sourceLineNo">164</span>        boolean succeeded = false;<a name="line.164"></a>
<span class="sourceLineNo">165</span>        try {<a name="line.165"></a>
<span class="sourceLineNo">166</span>            this.configureTransaction(jtx, txDef);<a name="line.166"></a>
<span class="sourceLineNo">167</span>            JTransaction.setCurrent(jtx);<a name="line.167"></a>
<span class="sourceLineNo">168</span>            succeeded = true;<a name="line.168"></a>
<span class="sourceLineNo">169</span>        } catch (DatabaseException e) {<a name="line.169"></a>
<span class="sourceLineNo">170</span>            throw new CannotCreateTransactionException("error configuring JSimpleDB transaction", e);<a name="line.170"></a>
<span class="sourceLineNo">171</span>        } finally {<a name="line.171"></a>
<span class="sourceLineNo">172</span>            if (!succeeded) {<a name="line.172"></a>
<span class="sourceLineNo">173</span>                try {<a name="line.173"></a>
<span class="sourceLineNo">174</span>                    jtx.rollback();<a name="line.174"></a>
<span class="sourceLineNo">175</span>                } catch (DatabaseException e) {<a name="line.175"></a>
<span class="sourceLineNo">176</span>                    // ignore<a name="line.176"></a>
<span class="sourceLineNo">177</span>                }<a name="line.177"></a>
<span class="sourceLineNo">178</span>            }<a name="line.178"></a>
<span class="sourceLineNo">179</span>        }<a name="line.179"></a>
<span class="sourceLineNo">180</span><a name="line.180"></a>
<span class="sourceLineNo">181</span>        // Done<a name="line.181"></a>
<span class="sourceLineNo">182</span>        tx.setJTransaction(jtx);<a name="line.182"></a>
<span class="sourceLineNo">183</span>    }<a name="line.183"></a>
<span class="sourceLineNo">184</span><a name="line.184"></a>
<span class="sourceLineNo">185</span>    /**<a name="line.185"></a>
<span class="sourceLineNo">186</span>     * Suspend the current transaction.<a name="line.186"></a>
<span class="sourceLineNo">187</span>     */<a name="line.187"></a>
<span class="sourceLineNo">188</span>    @Override<a name="line.188"></a>
<span class="sourceLineNo">189</span>    protected Object doSuspend(Object txObj) {<a name="line.189"></a>
<span class="sourceLineNo">190</span><a name="line.190"></a>
<span class="sourceLineNo">191</span>        // Sanity check<a name="line.191"></a>
<span class="sourceLineNo">192</span>        final JTransaction jtx = ((TxWrapper)txObj).getJTransaction();<a name="line.192"></a>
<span class="sourceLineNo">193</span>        if (jtx == null)<a name="line.193"></a>
<span class="sourceLineNo">194</span>            throw new TransactionUsageException("no JTransaction exists in the provided transaction object");<a name="line.194"></a>
<span class="sourceLineNo">195</span>        if (jtx != this.getCurrent())<a name="line.195"></a>
<span class="sourceLineNo">196</span>            throw new TransactionUsageException("the provided transaction object contains the wrong JTransaction");<a name="line.196"></a>
<span class="sourceLineNo">197</span><a name="line.197"></a>
<span class="sourceLineNo">198</span>        // Suspend it<a name="line.198"></a>
<span class="sourceLineNo">199</span>        if (this.logger.isTraceEnabled())<a name="line.199"></a>
<span class="sourceLineNo">200</span>            this.logger.trace("suspending current JSimpleDB transaction " + jtx);<a name="line.200"></a>
<span class="sourceLineNo">201</span>        JTransaction.setCurrent(null);<a name="line.201"></a>
<span class="sourceLineNo">202</span><a name="line.202"></a>
<span class="sourceLineNo">203</span>        // Done<a name="line.203"></a>
<span class="sourceLineNo">204</span>        return jtx;<a name="line.204"></a>
<span class="sourceLineNo">205</span>    }<a name="line.205"></a>
<span class="sourceLineNo">206</span><a name="line.206"></a>
<span class="sourceLineNo">207</span>    /**<a name="line.207"></a>
<span class="sourceLineNo">208</span>     * Resume a previously suspended transaction.<a name="line.208"></a>
<span class="sourceLineNo">209</span>     */<a name="line.209"></a>
<span class="sourceLineNo">210</span>    @Override<a name="line.210"></a>
<span class="sourceLineNo">211</span>    protected void doResume(Object txObj, Object suspendedResources) {<a name="line.211"></a>
<span class="sourceLineNo">212</span><a name="line.212"></a>
<span class="sourceLineNo">213</span>        // Sanity check<a name="line.213"></a>
<span class="sourceLineNo">214</span>        if (this.getCurrent() != null)<a name="line.214"></a>
<span class="sourceLineNo">215</span>            throw new TransactionUsageException("there is already a transaction associated with the current thread");<a name="line.215"></a>
<span class="sourceLineNo">216</span><a name="line.216"></a>
<span class="sourceLineNo">217</span>        // Resume transaction<a name="line.217"></a>
<span class="sourceLineNo">218</span>        final JTransaction jtx = (JTransaction)suspendedResources;<a name="line.218"></a>
<span class="sourceLineNo">219</span>        if (this.logger.isTraceEnabled())<a name="line.219"></a>
<span class="sourceLineNo">220</span>            this.logger.trace("resuming JSimpleDB transaction " + jtx);<a name="line.220"></a>
<span class="sourceLineNo">221</span>        JTransaction.setCurrent(jtx);<a name="line.221"></a>
<span class="sourceLineNo">222</span>    }<a name="line.222"></a>
<span class="sourceLineNo">223</span><a name="line.223"></a>
<span class="sourceLineNo">224</span>    /**<a name="line.224"></a>
<span class="sourceLineNo">225</span>     * Configure a new transaction.<a name="line.225"></a>
<span class="sourceLineNo">226</span>     *<a name="line.226"></a>
<span class="sourceLineNo">227</span>     * &lt;p&gt;<a name="line.227"></a>
<span class="sourceLineNo">228</span>     * The implementation in {@link JSimpleDBTransactionManager} sets the transaction's timeout and read-only properties.<a name="line.228"></a>
<span class="sourceLineNo">229</span>     * &lt;/p&gt;<a name="line.229"></a>
<span class="sourceLineNo">230</span>     *<a name="line.230"></a>
<span class="sourceLineNo">231</span>     * @param jtx transaction to configure<a name="line.231"></a>
<span class="sourceLineNo">232</span>     * @param txDef transaction definition<a name="line.232"></a>
<span class="sourceLineNo">233</span>     * @throws DatabaseException if an error occurs<a name="line.233"></a>
<span class="sourceLineNo">234</span>     */<a name="line.234"></a>
<span class="sourceLineNo">235</span>    protected void configureTransaction(JTransaction jtx, TransactionDefinition txDef) {<a name="line.235"></a>
<span class="sourceLineNo">236</span><a name="line.236"></a>
<span class="sourceLineNo">237</span>        // Set name<a name="line.237"></a>
<span class="sourceLineNo">238</span>        //jtx.setName(txDef.getName());<a name="line.238"></a>
<span class="sourceLineNo">239</span><a name="line.239"></a>
<span class="sourceLineNo">240</span>        // Set read-only<a name="line.240"></a>
<span class="sourceLineNo">241</span>        jtx.getTransaction().setReadOnly(txDef.isReadOnly());<a name="line.241"></a>
<span class="sourceLineNo">242</span><a name="line.242"></a>
<span class="sourceLineNo">243</span>        // Set lock timeout<a name="line.243"></a>
<span class="sourceLineNo">244</span>        final int timeout = this.determineTimeout(txDef);<a name="line.244"></a>
<span class="sourceLineNo">245</span>        if (timeout != TransactionDefinition.TIMEOUT_DEFAULT) {<a name="line.245"></a>
<span class="sourceLineNo">246</span>            try {<a name="line.246"></a>
<span class="sourceLineNo">247</span>                jtx.getTransaction().setTimeout(timeout * 1000L);<a name="line.247"></a>
<span class="sourceLineNo">248</span>            } catch (UnsupportedOperationException e) {<a name="line.248"></a>
<span class="sourceLineNo">249</span>                if (this.logger.isDebugEnabled())<a name="line.249"></a>
<span class="sourceLineNo">250</span>                    this.logger.debug("setting non-default timeout of " + timeout + "sec not supported by underlying transaction");<a name="line.250"></a>
<span class="sourceLineNo">251</span>            }<a name="line.251"></a>
<span class="sourceLineNo">252</span>        }<a name="line.252"></a>
<span class="sourceLineNo">253</span>    }<a name="line.253"></a>
<span class="sourceLineNo">254</span><a name="line.254"></a>
<span class="sourceLineNo">255</span>    @Override<a name="line.255"></a>
<span class="sourceLineNo">256</span>    protected void prepareForCommit(DefaultTransactionStatus status) {<a name="line.256"></a>
<span class="sourceLineNo">257</span><a name="line.257"></a>
<span class="sourceLineNo">258</span>        // Get transaction<a name="line.258"></a>
<span class="sourceLineNo">259</span>        final JTransaction jtx = ((TxWrapper)status.getTransaction()).getJTransaction();<a name="line.259"></a>
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<span class="sourceLineNo">262</span><a name="line.262"></a>
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<span class="sourceLineNo">267</span>            jtx.validate();<a name="line.267"></a>
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<span class="sourceLineNo">270</span><a name="line.270"></a>
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<span class="sourceLineNo">273</span><a name="line.273"></a>
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<span class="sourceLineNo">275</span>        final JTransaction jtx = ((TxWrapper)status.getTransaction()).getJTransaction();<a name="line.275"></a>
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<span class="sourceLineNo">277</span>            throw new NoTransactionException("no current JTransaction exists");<a name="line.277"></a>
<span class="sourceLineNo">278</span><a name="line.278"></a>
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<span class="sourceLineNo">280</span>        try {<a name="line.280"></a>
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<span class="sourceLineNo">284</span>        } catch (RetryTransactionException e) {<a name="line.284"></a>
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<span class="sourceLineNo">294</span><a name="line.294"></a>
<span class="sourceLineNo">295</span>    @Override<a name="line.295"></a>
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<span class="sourceLineNo">304</span>        try {<a name="line.304"></a>
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<span class="sourceLineNo">307</span>            jtx.rollback();<a name="line.307"></a>
<span class="sourceLineNo">308</span>        } catch (StaleTransactionException e) {<a name="line.308"></a>
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<span class="sourceLineNo">311</span>            throw new TransactionSystemException("error committing transaction", e);<a name="line.311"></a>
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<span class="sourceLineNo">316</span><a name="line.316"></a>
<span class="sourceLineNo">317</span>    @Override<a name="line.317"></a>
<span class="sourceLineNo">318</span>    protected void doSetRollbackOnly(DefaultTransactionStatus status) {<a name="line.318"></a>
<span class="sourceLineNo">319</span><a name="line.319"></a>
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<span class="sourceLineNo">323</span>            throw new NoTransactionException("no current JTransaction exists");<a name="line.323"></a>
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<span class="sourceLineNo">328</span>        jtx.getTransaction().setRollbackOnly();<a name="line.328"></a>
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<span class="sourceLineNo">330</span><a name="line.330"></a>
<span class="sourceLineNo">331</span>    @Override<a name="line.331"></a>
<span class="sourceLineNo">332</span>    protected void doCleanupAfterCompletion(Object txObj) {<a name="line.332"></a>
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<span class="sourceLineNo">335</span><a name="line.335"></a>
<span class="sourceLineNo">336</span>    @Override<a name="line.336"></a>
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<span class="sourceLineNo">345</span>        final Transaction tx = jtx.getTransaction();<a name="line.345"></a>
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<span class="sourceLineNo">349</span><a name="line.349"></a>
<span class="sourceLineNo">350</span>    /**<a name="line.350"></a>
<span class="sourceLineNo">351</span>     * Like {@link JTransaction#getCurrent}, but returns null instead of throwing {@link IllegalStateException}.<a name="line.351"></a>
<span class="sourceLineNo">352</span>     *<a name="line.352"></a>
<span class="sourceLineNo">353</span>     * @return the transaction associated with the current thread, or null if there is none<a name="line.353"></a>
<span class="sourceLineNo">354</span>     */<a name="line.354"></a>
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<span class="sourceLineNo">356</span>        try {<a name="line.356"></a>
<span class="sourceLineNo">357</span>            return JTransaction.getCurrent();<a name="line.357"></a>
<span class="sourceLineNo">358</span>        } catch (IllegalStateException e) {<a name="line.358"></a>
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<span class="sourceLineNo">361</span>    }<a name="line.361"></a>
<span class="sourceLineNo">362</span><a name="line.362"></a>
<span class="sourceLineNo">363</span>// TxWrapper<a name="line.363"></a>
<span class="sourceLineNo">364</span><a name="line.364"></a>
<span class="sourceLineNo">365</span>    private static class TxWrapper implements SmartTransactionObject {<a name="line.365"></a>
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<span class="sourceLineNo">367</span>        private JTransaction jtx;<a name="line.367"></a>
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<span class="sourceLineNo">373</span>        public JTransaction getJTransaction() {<a name="line.373"></a>
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<span class="sourceLineNo">379</span><a name="line.379"></a>
<span class="sourceLineNo">380</span>        @Override<a name="line.380"></a>
<span class="sourceLineNo">381</span>        public boolean isRollbackOnly() {<a name="line.381"></a>
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<span class="sourceLineNo">384</span><a name="line.384"></a>
<span class="sourceLineNo">385</span>        @Override<a name="line.385"></a>
<span class="sourceLineNo">386</span>        public void flush() {<a name="line.386"></a>
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<span class="sourceLineNo">388</span>    }<a name="line.388"></a>
<span class="sourceLineNo">389</span><a name="line.389"></a>
<span class="sourceLineNo">390</span>// SynchronizationCallback<a name="line.390"></a>
<span class="sourceLineNo">391</span><a name="line.391"></a>
<span class="sourceLineNo">392</span>    /**<a name="line.392"></a>
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<span class="sourceLineNo">394</span>     * {@link org.jsimpledb.core.Transaction.Callback} interface.<a name="line.394"></a>
<span class="sourceLineNo">395</span>     */<a name="line.395"></a>
<span class="sourceLineNo">396</span>    public static class TransactionSynchronizationCallback implements Transaction.Callback {<a name="line.396"></a>
<span class="sourceLineNo">397</span><a name="line.397"></a>
<span class="sourceLineNo">398</span>        protected final TransactionSynchronization synchronization;<a name="line.398"></a>
<span class="sourceLineNo">399</span><a name="line.399"></a>
<span class="sourceLineNo">400</span>        /**<a name="line.400"></a>
<span class="sourceLineNo">401</span>         * Constructor.<a name="line.401"></a>
<span class="sourceLineNo">402</span>         *<a name="line.402"></a>
<span class="sourceLineNo">403</span>         * @param synchronization transaction callback<a name="line.403"></a>
<span class="sourceLineNo">404</span>         * @throws IllegalArgumentException if {@code synchronization} is null<a name="line.404"></a>
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<span class="sourceLineNo">407</span>            if (synchronization == null)<a name="line.407"></a>
<span class="sourceLineNo">408</span>                throw new IllegalArgumentException("null synchronization");<a name="line.408"></a>
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<span class="sourceLineNo">411</span><a name="line.411"></a>
<span class="sourceLineNo">412</span>        @Override<a name="line.412"></a>
<span class="sourceLineNo">413</span>        public void beforeCommit(boolean readOnly) {<a name="line.413"></a>
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<span class="sourceLineNo">417</span>        @Override<a name="line.417"></a>
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<span class="sourceLineNo">421</span><a name="line.421"></a>
<span class="sourceLineNo">422</span>        @Override<a name="line.422"></a>
<span class="sourceLineNo">423</span>        public void afterCommit() {<a name="line.423"></a>
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<span class="sourceLineNo">426</span><a name="line.426"></a>
<span class="sourceLineNo">427</span>        @Override<a name="line.427"></a>
<span class="sourceLineNo">428</span>        public void afterCompletion(boolean committed) {<a name="line.428"></a>
<span class="sourceLineNo">429</span>            this.synchronization.afterCompletion(committed ?<a name="line.429"></a>
<span class="sourceLineNo">430</span>              TransactionSynchronization.STATUS_COMMITTED : TransactionSynchronization.STATUS_ROLLED_BACK);<a name="line.430"></a>
<span class="sourceLineNo">431</span>        }<a name="line.431"></a>
<span class="sourceLineNo">432</span><a name="line.432"></a>
<span class="sourceLineNo">433</span>        @Override<a name="line.433"></a>
<span class="sourceLineNo">434</span>        public boolean equals(Object obj) {<a name="line.434"></a>
<span class="sourceLineNo">435</span>            if (obj == this)<a name="line.435"></a>
<span class="sourceLineNo">436</span>                return true;<a name="line.436"></a>
<span class="sourceLineNo">437</span>            if (obj == null || obj.getClass() != this.getClass())<a name="line.437"></a>
<span class="sourceLineNo">438</span>                return false;<a name="line.438"></a>
<span class="sourceLineNo">439</span>            final TransactionSynchronizationCallback that = (TransactionSynchronizationCallback)obj;<a name="line.439"></a>
<span class="sourceLineNo">440</span>            return this.synchronization.equals(that.synchronization);<a name="line.440"></a>
<span class="sourceLineNo">441</span>        }<a name="line.441"></a>
<span class="sourceLineNo">442</span><a name="line.442"></a>
<span class="sourceLineNo">443</span>        @Override<a name="line.443"></a>
<span class="sourceLineNo">444</span>        public int hashCode() {<a name="line.444"></a>
<span class="sourceLineNo">445</span>            return this.synchronization.hashCode();<a name="line.445"></a>
<span class="sourceLineNo">446</span>        }<a name="line.446"></a>
<span class="sourceLineNo">447</span>    }<a name="line.447"></a>
<span class="sourceLineNo">448</span>}<a name="line.448"></a>
<span class="sourceLineNo">449</span><a name="line.449"></a>




























































</pre>
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